31112200202117 has 2 divisors, whose sum is σ = 31112200202118. Its totient is φ = 31112200202116.

The previous prime is 31112200202011. The next prime is 31112200202131. The reversal of 31112200202117 is 71120200221113.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28520876164036 + 2591324038081 = 5340494^2 + 1609759^2 .

It is a cyclic number.

It is not a de Polignac number, because 31112200202117 - 2¹⁴ = 31112200185733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31112200202092 and 31112200202101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31112200402117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556100101058 + 15556100101059.

It is an arithmetic number, because the mean of its divisors is an integer number (15556100101059).

Almost surely, 2^{31112200202117} is an apocalyptic number.

It is an amenable number.

31112200202117 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112200202117 is an equidigital number, since it uses as much as digits as its factorization.

31112200202117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

The spelling of 31112200202117 in words is "thirty-one trillion, one hundred twelve billion, two hundred million, two hundred two thousand, one hundred seventeen".